ML MSS.562, Letters to E. P. Ramsay 1862-91, Mitchell Library, State Library of New South Wales, Sydney.M’s new-year greeting indicates that this note was probably written in early January. MS precedes M to E. Ramsay, 22 January 1881, in the file, and is dated to 1881 on this basis

ARW’s view of migration of plants from mountain to mountain gains support from case described in Nature [23 (1880): 125–6] by J. G. Baker. Identical species of alpine plants found in African mountains and Madagascar.